查找本地主机的IP地址。

/*
 from n o w j a v a . c o m - 时  代  Java 
*/

/* $Revision: 361 $ $Date: 2010-10-01 16:11:11 +0200 (Fr, 01 Okt 2010) $ $Author: bkiers $

 *

 * Copyright (C) 2007-2009  National Library of the Netherlands,

 *                          Nationaal Archief of the Netherlands,

 *                          Planets

 *                          KEEP

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For more information about this project, visit

 * http://dioscuri.sourceforge.net/

 * or contact us via email:

 *   jrvanderhoeven at users.sourceforge.net

 *   blohman at users.sourceforge.net

 *   bkiers at users.sourceforge.net

 *

 * Developed by:

 *   Nationaal Archief               <www.nationaalarchief.nl>

 *   Koninklijke Bibliotheek         <www.kb.nl>

 *   Tessella Support Services plc   <www.tessella.com>

 *   Planets                         <www.planets-project.eu>

 *   KEEP                            <www.keep-project.eu>

 *

 * Project Title: DIOSCURI

 */

//package com.nowjava;


import java.net.InetAddress;


import java.net.UnknownHostException;


public class Main {

    /**

     * Find the IP address of localhost.

     *

     * @return the IP address of localhost.

     */

    public static String getHostIP() {

        try {

            byte[] ipAddr = InetAddress.getLocalHost().getAddress();

            StringBuilder b = new StringBuilder();

            if (ipAddr != null && ipAddr.length > 0) {

                b.append(ipAddr[0]);

                for (